Why can MELF resistors resist sulfuration? | Thin Film Resistor Manufacturer | FIRSTOHM

Sulfur in the air – resistor killer Chip resistor contains silver(Ag) in its electrode structure. When there is a large amount of sulfur in the air, the silver tends to react with it and becomes silver sulfides(Ag2S or Ag2SO4), and the silver loses its conductivity. As a result, the resistance value gradually increases and eventually becomes an open circuit. Below is the diagram of the internal structure of a chip resistor: FIRSTOHM is a high reliability MELF resistors, SMD resistors, metal film resistors, surge resistors, wire wound resistors, precision resistors, High voltage resistors, high Power resistors, metal oxide resistor, thin film resistors, fixed resistors manufacturer from Taiwan since 1969. FIRSTOHM is one of the few companies who is able to design thin-film MELF resistors according to customer's requirements with high quality and reliability. We’re specialized in thin-film resistors since 1969, ISO9001/14001 certificated manufacturer. Over 50 years of industry experience for resistors design and manufacturing facility.

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Why can MELF resistors resist sulfuration? | Thin Film Resistor Manufacturer | FIRSTOHM

FIRSTOHM Sulflur Test | More than 50 years of resistor manufacture experience

FIRSTOHM Sulflur Test
FIRSTOHM Sulflur Test

Why can MELF resistors resist sulfuration?

Sulfur in the air – resistor killer
Chip resistor contains silver(Ag) in its electrode structure. When there is a large amount of sulfur in the air, the silver tends to react with it and becomes silver sulfides(Ag2S or Ag2SO4), and the silver loses its conductivity. As a result, the resistance value gradually increases and eventually becomes an open circuit. Below is the diagram of the internal structure of a chip resistor:

The graph illustrate material composition of chip resistors, so that easy understand the reasons why chip resistors be vulcanized.

The Best solution for anti-sulfuration:

MELF resistor - there is no silver(Ag) content in the production process and raw materials, so there will be no sulfuration.

Why can MELF resistors resist sulfuration? | Thin Film Resistor Manufacturer | FIRSTOHM

Located in Taiwan since 1969, First resistor & condenser Co. Ltd. has been a manufacturer of MELF resistors manufacturer. Their main thin film MELF resistors include, automotive grade resistors, surface mount resistors, fusible resistors, SMD resistors, chip resistors, fixed resistors and fusible thin film resistors, which are being widely used in industrial applications such as power supply, smart meter, solar inverter, energy storage device, electric vehicle, communication equipment, and medical device.

FIRSTOHM is one of the few companies who is able to design thin-film MELF resistors according to customer's requirements with high quality and reliability. We’re specialized in thin-film resistors since 1969, ISO9001/14001 certificated manufacturer.

FIRSTOHM has been providing customers with high quality carbon film and metal film resistors since 1969, with both advanced technology and 50 years of experience, FIRSTOHM ensures that each customer's demands are met.